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Effect of gamma irradiation on Burkholderia thailandensis (Burkholderia pseudomallei surrogate) survival under combinations of pH and NaCl.

Authors
윤요한Kim, Jae-HunByun, Myung-WooChoi, Kyoung-HeeLee, Ju-Woon Lee
Issue Date
Apr-2010
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
RADIATION PHYSICS AND CHEMISTRY, v.79, no.4, pp 545 - 548
Pages
4
Journal Title
RADIATION PHYSICS AND CHEMISTRY
Volume
79
Number
4
Start Page
545
End Page
548
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147936
DOI
10.1016/j.radphyschem.2009.12.004
ISSN
0969-806X
Abstract
This study evaluated the effect of gamma irradiation on Burkholderia thailandensis (Burkholderia pseudomallei surrogate; potential bioterrorism agent) survival under different levels of NaCl and pH. B. thailandensis in Luria Bertani broth supplemented with NaCl (0–3%), and pH-adjusted to 4–7 was treated with gamma irradiation (0–0.5 kGy). Surviving cell counts of bacteria were then enumerated on tryptic soy agar. Data for the cell counts were also used to calculate D10 values (the dose required to reduce 1 log CFU/mL of B. thailandensis). Cell counts of B. thailandensis were decreased (P<0.05) as irradiation dose increased, and no differences (P≥0.05) in cell counts of the bacteria were observed among different levels of NaCl and pH. D10 values ranged from 0.04 to 0.07 kGy, regardless of NaCl and pH level. These results indicate that low doses of gamma irradiation should be a useful treatment in decreasing the potential bioterrorism bacteria, which may possibly infect humans through foods.
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